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Exits where the majority of traffic exits off the highway.

Started by Roadgeekteen, April 10, 2021, 05:23:53 PM

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Roadgeekteen

Thinking about the I-90/I-84 exit where I think more traffic exits. My apologies if this has been done before.
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NWI_Irish96

Excluding the many situations that are trivial because the highway ends and all traffic must exit.
Also excluding the many situations where this occurs because the route exits itself (such as I-94 EB at I-80/294/IL 394)

I don't have hard data, but I would guess these would qualify:

I-65 NB at I-80/94
I-64 both directions at I-65/71
IN 912 SB at I-80/94
IN 49 SB at US 30/IN 2
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CtrlAltDel

#2
Quote from: cabiness42 on April 10, 2021, 05:36:07 PM
I don't have hard data, but I would guess these would qualify:

I-65 NB at I-80/94
I-64 both directions at I-65/71
IN 912 SB at I-80/94
IN 49 SB at US 30/IN 2

Well, here's one bit of hard data:



That's about 3/4 of the traffic leaving I-65 in one direction or the other, which honestly, seems a bit lower than I would have thought. Some of the remaining traffic is headed for I-90, but there's apparently still about 12,000 vehicles that make it to the terminus at US-12/US-20.
Interstates clinched: 4, 57, 275 (IN-KY-OH), 465 (IN), 640 (TN), 985
State Interstates clinched: I-26 (TN), I-75 (GA), I-75 (KY), I-75 (TN), I-81 (WV), I-95 (NH)

US 89

I-70 in Utah, westbound exit 157. Over half the traffic exits for US 6 towards Salt Lake City.

JoePCool14

I'm guessing most of the traffic on the Elgin-O'Hare Expy going east will exit at I-290.

It would be intersting to compare AADTs for traffic taking the Tri-State versus the Edens. The Tri-State is the exit, and has three lanes versus the two going to downtown Chicago on I-94.

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Big John

Atlanta north Parameter:  I-285 WB to I-75. (77,700 through vs 80,600 exiting)

bulldog1979

I-75 at US 2 in St. Ignace, Michigan. I believe the split is something like 2:1 traffic leaving vs. continuing.

hbelkins

Mountain Parkway eastbound at Exit 43. Around 6,000 to the KY 15 spur, around 4,000 stays on the Mountain Parkway.


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Revive 755

Quote from: JoePCool14 on April 10, 2021, 06:13:17 PM
I'm guessing most of the traffic on the Elgin-O'Hare Expy going east will exit at I-290.

It would be intersting to compare AADTs for traffic taking the Tri-State versus the Edens. The Tri-State is the exit, and has three lanes versus the two going to downtown Chicago on I-94.

Based on IDOT's GIS app, The Tri-State has 127,700 south of the Edens Spur and 179,400 north of the Edens Spur.  The Edens Spur east of the Tri-State has 50,700 and somehow goes up to 51,100 east of IL 43 despite the lack of ramps of an eastbound entrance/westbound exit to/from IL 43.



US 41 qualifies at the Edens Spur, with 62,400 to the north of the spur and 114,800 to the south.

jp the roadgeek

I-95 North at the I-295/I-495 complex in DE.  I would say more than half of the traffic exits onto I-295 to get to the DMB and NJTP.  Then, more than half of what remains exits onto I-495 as the thru route to Philly. 
Interstates I've clinched: 97, 290 (MA), 291 (CT), 291 (MA), 293, 295 (DE-NJ-PA), 295 (RI-MA), 384, 391, 395 (CT-MA), 395 (MD), 495 (DE), 610 (LA), 684, 691, 695 (MD), 695 (NY), 795 (MD)

SkyPesos

#10
Here's two in the Cincinnati area.

I-74 EB exit 9. More traffic "exits" onto I-275 N than continuing on I-74 E:


OH 126 EB exit 32B-C. About 14k of the 20k vehicles on OH 126 exit onto I-71. Note that the I-71 exits are on a C/D ramp, which the map doesn't show well, which is why I'm counting as a single exit. The freeway ends about a mile to the east of the interchange at US 22, so it makes sense:



DandyDan

I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.
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hotdogPi

Quote from: DandyDan on April 11, 2021, 05:29:40 AM
I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.

That's not an exit; I-80 → I-76 is the through movement.
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MA 22, 40, 107, 109, 117, 119, 126, 141, 159
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froggie

^ Depends how you define "through movement".  One could also argue that remaining on I-80 is a "through movement".

fillup420

both ends of the I-40/85 concurrency have most traffic exiting onto I-40. 85 is the through movement at both splits

JayhawkCO

This one is a bit of a technicality, but lots more people exit onto I-70 from CO470 northbound than continue into Golden.

I would assume it's similar to something like I-79->I-90 vs. Erie.

Chris

SEWIGuy

My example is one I drive everyday.  In the Green Bay area, more southbound I-43 traffic exits onto WI-172 (19,000) than continues south on I-43 (13,000).  (If I am reading the traffic counts correctly.)

That is not the case on the west side of town.  More traffic continues on I-41 than exits onto WI-172.

kenarmy

Quote from: 1 on April 11, 2021, 06:16:10 AM
Quote from: DandyDan on April 11, 2021, 05:29:40 AM
I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.

That's not an exit; I-80 → I-76 is the through movement.

Quote
kphoger once said-
Yes, you are.  You're exiting I-59.  The angle of the roadway doesn't matter.
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SkyPesos

Quote from: jayhawkco on April 11, 2021, 09:18:26 AM
This one is a bit of a technicality, but lots more people exit onto I-70 from CO470 northbound than continue into Golden.

I would assume it's similar to something like I-79->I-90 vs. Erie.

Chris
That's like the OH 126 example I pointed above. When the through movement freeway is close to ending or downgrades to an arterial past the interchange, most vehicles would exit onto the last freeway to freeway interchange. Some other examples of this I know of that possibility could have more exiting traffic, though without data to actually back it up:

MO 364 W at I-64. Through movement west is a 2 lane road.
MO 364 E at I-270. I'm unsure if the through movement have less traffic than the exit to 270 on this one though, as I frequently see Page Ave backed up to an extent.
OH 315 N at I-270 (exit 12). Through movement is a 2 lane road.
I-670 E at I-270 (exit 10). Continues as US 62 east of there.
OH 161 W at I-270 (exit 40). Through movement is 2 lanes while there are 4(!) exit lanes.
US 33 E at I-270 (exit 108). City street through Dublin east if there
I-471 S at I-275 (exit 1). Continues as US 27 south of there.
OH 32 W at I-275. Turns into a 2 lane road about a mile west of I-275
I-69 S at I-465 (exit 200). Unsure about this one, as Binford Blvd looks relatively busy.

zachary_amaryllis

nb i-25 at exit 269b (sh 14 west - fort collins)

its really the last 'major' exit before 20-something miles of ... not much. evening rush, most ft collins exits remove the nb traffic from i-25. once you pass 269b, the northernmost 'major' ft collins exit (shut UP, mountain vista drive, you only exist because of the budweiser plant), everything goes much faster to chyoming.
clinched:
I-64, I-80, I-76 (west), *64s in hampton roads, 225,270,180 (co, wy)

Roadgeekteen

Quote from: 1 on April 11, 2021, 06:16:10 AM
Quote from: DandyDan on April 11, 2021, 05:29:40 AM
I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.

That's not an exit; I-80 → I-76 is the through movement.
Well the numbering continues onto I-80.
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Current Interstate map I am making:

https://www.google.com/maps/d/u/0/edit?hl=en&mid=1PEDVyNb1skhnkPkgXi8JMaaudM2zI-Y&ll=29.05778059819179%2C-82.48856825&z=5

Dirt Roads

Nowadays, I suspect that most of the southbound traffic on I-79 heads down Corridor L (US-19) towards Beckley.  Except on WVU home game weekends.

thspfc

Maybe I-94 to I-894 at the Zoo and Mitchell interchanges in Milwaukee, but I'm not sure.

pianocello

SB I-75 at the Florida's Turnpike is close to a 50-50 split, but it looks like just over half continue down to Tampa.

A better example would be NB I-75 at I-595. The DOT site for traffic counts is a little murky because it doesn't split AADT by direction on mainlines (not easily, at least), but the counts for the ramps going to EB 595 and the NB Sawgrass Expy are higher than what the count for the NB I-75 mainline.

Same deal for WB I-595 at the same interchange. The interstate ends, but the logical thru movement is straight onto NB I-75. However, the AADT on the ramp to SB I-75 is almost twice that.
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zachary_amaryllis

Quote from: Roadgeekteen on April 11, 2021, 02:45:24 PM
Quote from: 1 on April 11, 2021, 06:16:10 AM
Quote from: DandyDan on April 11, 2021, 05:29:40 AM
I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.

That's not an exit; I-80 → I-76 is the through movement.
Well the numbering continues onto I-80.

there's also no exits on nebraskas what .... mile? of i-76 except for the end of the highway
clinched:
I-64, I-80, I-76 (west), *64s in hampton roads, 225,270,180 (co, wy)



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